in reply to SvMAGICAL() question

Look for "Magic Variables" in the guts. Specifically, it is a C language macro in lib/CORE/sv.h:

#define SvMAGICAL(sv)    (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))

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for examining an sv for the existance of these variables.

The intelligent reader will judge for himself. Without examining the facts fully and fairly, there is no way of knowing whether vox populi is really vox dei, or merely vox asinorum. -- Cyrus H. Gordon

In Section Seekers of Perl Wisdom